| 摘要 |
PROBLEM TO BE SOLVED: To provide a power controller that prevents heat generation in a switching element according to the maximum switching frequency of a specific switching element due to, in conventional power controllers, switching operation of consecutively shunting or open-circuiting a connection between a specific power source and the specific switching element that are optionally selected to determine an operating region for shunt or open circuit of each of the plurality of power sources.SOLUTION: The power controller includes: a plurality of backflow prevention elements respectively series-connected to a plurality of power sources for supplying power; a plurality of switching elements parallel-connected to the respective power sources, series-connected to the respective backflow prevention elements, and switching to shunt or open-circuit the connection to the respective power sources; an error amplifier outputting an error amplification signal indicating excess and shortage in a power supply state of the plurality of power sources; and a calculation drive part determining a ratio between power supply and shunt for each of the power sources by comparing the error amplification signal with a reference value to sequentially switch the respective switching elements. |
